meyers



G. W. MEYERS.

MACHINE FOR OPERATING ON SURFACES,

APPLICATION FILED DEC.26. 1916 Patented Nov. 4, 1919.

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I Hi G. WMEYERS. MACHINE FOR OPERATING 0N SURFACES.

APPLICATION FILED DEC-26.1916.

Patented Nov. 4, 1919.

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GEORGE W. MEYERS, OF CHICAGO, ILLINOIS, ASSIGNOR TO BUILDING EQUIPMENTS MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLI- NOIS.

MACHINE FOR OPERATING ON SURFACES.

Specification of Letters Patent.

Patented Nov. 41., 1919.

Application filed December 26, 1916. Serial No. 138,776.

scrubbing, polishing or otherwise cleaning the floor or other surface to be operated upon.

Among the objects of the invention are to provide a motor or other power driven machine in which the scrubbin brushes or other cleaning or polishing devices are carried by a revolving ring; to provide means for driving this ring and also utilizing the same power for propelling the vehicle; to provide a construction in which the machlne is advanced automatically as the scrubbing or polishing ring is revolved so that all portions of the areas covered by the advancing machine are operated upon; to provide means for supporting the machine so as to permit of adjustably regulating the pressure of the brushes or other operating devices upon the floor orother surfaces to be cleaned; to provide means for adjustin the height of the brush carrying devices om the surface to be operated upon so as to compensate for any wear upon the driving wheels; to provide means for automatically supplying to each of the scrubbing or other cleaning devices, water or other suitable cleaning substance; to provide a construction which will be compact and the parts positively driven in timed relation; and in general to provide a new and improved construction of the character above referred to. i

The invention also resides in the novel construction of the ring which carries the scrubbing brushes or other operating devices and in such other features of construction as will more fully hereinafter appear.

In the drawings:

Figure 1 is a side elevational view, partly a in section.

Fig. 2 is a top plan view of the brush supporting ring.

Figs. 3 and 4 are enlarged detail views of the brush holding mechanism.

Describing in detail the particular .embodiment of my invention shown in the drawings, 1 designates the frame of the machine, 2 the driving aXle and 3 the traction wheels, mounted upon the axle and adapted to drive the machine forward. At

. its center portion the frame is supported by a caster wheel 4, carried by an arm 5, which is pivoted at G and can be raised and lowered by means of an adjustment mechanism 7, consisting of a lock nut 8 on the threaded stem 9.

While any suitable source of power could be employed for the driving mechanism in the present construction, I have employed a motor 10 on the shaft 11, to which is connected a beveled gear 12, meshing with beveled gears 13 and 14 on the horizontal shaft 15. The gear 13 acts simply as an idler but the shaft on which it is mounted may be employed for driving any suitable tool or other device if desired. The lower end of the shaft 11 is employed for driving the scrubbing ring 16 which, as shown in Fig. 2 has a plurality of arms 17, which at their outer ends support the brush holding devices as follows: Each of the arms 17 has a pair of rollers 18 and 19, which are vertically movable in a slot 20 of the bifurcated lug 21. This bifurcated lug 21 is preferably cast integral with the ring 22. Associated with each of the bifurcated members 21 is a bearing hub 23 and as shown in Fig. 2, there is also intermediate each of these hubs a similar hub 24. Through each of the hubs 23 and 24 there projects a square shank 2 5, which is vertically adjustable in the hubs but its downward movement is limited by a pin 26. At their lower ends the shanks 25 are each provided with plates 27, through which extend screws or other securing members 28 for removably fastening to the shank the brush carrying saddle 29. As shown in Fig. 3, the saddles 29 are each'of inverted U-shape and the wooden body portion 30 of the brush 31 is held in position in the saddle by bolts 32.

With this construction the brushes or other operating devices can be easily reto hold the brushes down into engagement with the flooring or other surface to be operated upon, there is employed a plurality of leaf springs 36, the amount of pressure exerted by these springs being adjustable by tightening or loosening the Wing nuts 37.

For revolving the brushes the body portion 16 of the frame carrying the brushes is keyed at 38 to the lower end of the shaft l1. Suitable Washers or anti-friction devices 39 are arranged above and below the body portion 16 of the brush carrying frame.

As the brushes revolve, water or other cleaning or polishing substance is fed to each of the brushes in the following manner: From a suitable supply tank 40, a conduit 41 leads to the cup 42 formed on the uppersurface of the body portion 16. The water fed into this cup through the conduit L1 is distributed through channels 43 in the arms 17 to a point of discharge 4:4, ust in advance of the brush.

In order to insure the entire surface passed over by the machine being operated upon, means are provided for automatically propelling the machine forward in predetermined relation to the movement of the ring carrying the scrubbing devices. In detail this driving mechanism comprises a ing ring,

helical gear 45, which meshes with a gear 46 on the stub shaft 47. By means of a sprocket wheel 48, sprocket chain 49 and sprocket wheel 50, the movement of the shaft 47 is transmitted to the main drive shaft 2, and from the latter to the drive wheels 3. The invention is not limited to the particular drive mechanism described, and various other changes in the details of construction and arrangements and combinations of parts can be made within the scope of my invention.

I claim as my invention:

1. In a device for operating on floors or the like, the combination with a frame, of arms projecting therefrom, a brush carryand a connection between the frame arm members and ring including rollers carried by one member and movable in slots in the other member.

2. In a device for operating on floors and 50 the like, the combination with a rotatable frame, of arms projecting therefrom, a brush carrying ring, connections between the frame, arm members and ring, said connections including a bifurcated lug member provided with vertical slots and rollers vertically movable therein.

GEORGE W. MEYERS. 

